Radiator and similar structure



one a TT FFHQE.

CHARLES HENDERSON TRUE, OF HAMMOND, INDIANA, ASSIGNOR 'I'O LOCOMOTIVESUPERHEATER COMPANY, OF NEW YORK N. Y., A CORPORATION OF DELA- WARE.

RADIATOR AND SIMILAR STRUCTURE.

Specification of Letters Patent.

Patented Feb. 15, 11921.

To all whom it may concern:

Be it known that I, CHARLES H. TRUE, a citizen of the United States,residing at Hammond, in the county of Lake and State of Indiana, haveinvented certain new and useful Improvements in Radiators and SimilarStructures, of which the following is a specification.

This invention relates to radiators and related structures andparticularly to a radiator whose form and method of making are describedin United States Patents 1,264,455 and 1,315,614 ranted to myself onApril 30th, 1918, and eptember 9th, 1919, respectively.

The present improvement has for its purpose the provision of an improvedform of header in these structures.

The invention is illustrated in the single sheet of drawing herewith, inwhich Figure 1 illustrates a fragmentary side view partly insection of aradiator according to my invention partly completed; Fig. 2 is an endView of the same; Fig. 3 is a fragmentary View partly in section on line33 of Fig. 1 at a subsequent state of manufacture; Fig. 4 is a similarview of the completed radiator; Fig. 5 is a sectional view on line 55 ofFig. 4; Fig. 6 is a view similar to Fig. 4 showing a modification; andFigs. 7 and 8 show in views similar to 5 and 4 respectively a furthermodification.

The pipes 11 are joined to each other by a process which is wellunderstood by those familiar with this art and which is completelydescribed in Patent 1,264,455 referred to above. The following briefdescription will therefore suflioe.

Two pipes having had their ends heated to a welding heat, are each slitalong a line parallel to its axis for a suitable distance,

the portions adjacent to the sides and bottom of the slit of each arebent outward and the edges of one welded to those of the other. Thesesteps may be performed without any special apparatus but are preferablyperformed in suitably shaped dies,'the slitting, bending, and weldingall being done in one operation. A third pipe is joined to one of thetwo by a second similar operation, and as many more pipes as desired areadded -by successive operations. The process is described in the patentalso in a modified form, which has proved very good in practice, wherebythe whole number of pipes which it is desired to join are in a suitablyformed set of dies joined simultaneously.

In elther case the resulting structure is an incomplete header ormanifold connectthe pipes have been joined and the ends of thetrough-like incomplete header have been split and the adjacent portionsbent out ward. Instead of bending the sides of the trough toward eachother, these portions (designated by reference numerals 2-2) are bentoutward, as illustrated in Fig. 3,

.so that they assume the shape of partial cylinders whose radiusconforms to the pipe 3. This pipe 3 occupies a position clearlyillustrated in Figs. 4 and 5. It has a series of openings 4-4 in it,each opening being opposite one of the pipes 11. The portions 2-2 arewelded to pipe 4 along their common surfaces 5-5 by means of pressure,hammering, electric welding or any other preferred means. In this way avery convenient and strong header is provided for the set of pipes. Thisheader may evidently be threaded or prepared in some other way in itsends for connections. It will be clear that a similar header may be andusually will be provided for the other ends of the pipes 11. Thevariation in Fig. 6 will be understood without any particulardescription. The header 3 may evidently be flattened to an extentthought desirable by the designer. his figure illustrates one additionalfeature, 73. e., thematerial 6 which may be' fille'd in at the pointsindicated by means of acetylene or other autogenous welding. Thismaterial when used furnishes an additional guarantee against leak-. age.It also adds to the strength of the connection between theheader 3 andthe pipes and in fact if desired it may be relied on entirely therewould be no welding between the portions 2. and the header 3 at all. Thevariation shown in Figs. 7 and 8 may prove desirable in some cases. Itwill be seen in Fig. 5 that the header 3 comes in'contact with the metaljoining the adjacent pipes 1-1 at the" points 7-7. If desired theportions 22 need not be bent out all the way down some degree the tothese points 7, but only part way, so that the pi e 1 remainsconsiderably above 7. This will be entirely clear, particularly fromFig. 8. Inthat case the openings 4 -4: need not be exactly opposite thepipes 1-1 and in fact need not correspond in number, size or location tothese points at all.

Obviously it .is uite possible to vary to orms of my invention showninthe drawing. These forms are meant for illustration only and are notto be considered in any way as limitations. What'I claim is 1. The'process of making structures of v the kind described, which comprisesjoining edges of the other; joinin the ends of'two of the pipes b thesteps of heating them; slitting them or a suitable distance from theirends; pressing the portions adjacent to each side and to the bottom ofthe slits outward; welding the edges of said portions of one to thecorresponding in a similar manner a third pipe to one o the first two,and

simi arly adding as many more pipes as 'desir (1; whereby the pipesarejoined by an open-topped trough-1i e incomplete header; slitting the twoends of the trough and bending the portions adjacent to the slitsoutward; placing a pipe into the trough and securlng it to the walls ofthe trough.

2. The process of making structures of the kind described, whichcomprises joining the ends of two -of the pipes by the steps of heatingthem; slitting them for a suitable distance from their ends; pressingthe porfor this strength, inwhich case "bending the portions adjacent tothe slits outward; perforating a header pipe with holes spaced tocorrespond to the ends of the assembled pipes; placing this pipe intoplace in the open-ended trough and welding the trough walls to it.

3. The process of making structures ofthe ends of two of the pipes b thesteps of heating them, slitting them or a suitable distance from theirends; pressing the portions ad'acent to each side and to the bot-v tomof t e slits outward; welding the edges of said portions of one to thecorresponding the first two, and

the kind described, which comprises joining K edges of the other;joiningin a similar manner a third pipe to one of the first two, andsimilarly adding as many more pipes as desired; whereby the ipes arejoined by an open-topped troughike incomplete header; slitting the twoends of the trough and bending the portions adjacent to the slitsoutward; perforating a header pipe with holes spaced to correspond tothe ends of the assembled pipes; curving the sides ofthe trough to theradius of the header pipe; placing the pipe into the trou h and weldmgit to the walls of the troug 4. A structure of the class describedcomprising a set of pipes integrally connected at their ends to atrough-shaped channel, and a header pipe lying in and welded to thewalls of the trough, the header pipe being provided with perforationsopposite the plpe ends. CHARLES HENDERSON TRUE.

